星空传媒 Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

ENVIRONMENTAL AND MINE CLOSURE OBLIGATIONS (Narrative) (Details)

v3.8.0.1

ENVIRONMENTAL AND MINE CLOSURE OBLIGATIONS (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) T
Site Contingency [Line Items]	听	听
Accrual for Environmental Loss Contingencies, Period Increase (Decrease)	听	$ (9.2)
Proved Developed and Undeveloped Reserves, Net, Period Increase (Decrease) \| T	听	115,000,000
Environmental Loss Contingency And Mine Reclamation And Closing Liability Current And Noncurrent	$ 200.1	$ 206.8
Accrual for Environmental Loss Contingencies	2.9	2.8
Mine Reclamation and Closing Liability, current and noncurrent	197.2	204.0
U.S. Iron Ore [Member]	听	听
Site Contingency [Line Items]	听	听
Accrual for Environmental Loss Contingencies, Period Increase (Decrease)	(26.2)	听
Asia Pacific Iron Ore [Member]	听	听
Site Contingency [Line Items]	听	听
Accrual for Environmental Loss Contingencies, Period Increase (Decrease)	10.1	听
Previously Owned Or Operating Facilities [Member] \| LTV Steel Mining Company [Member]	听	听
Site Contingency [Line Items]	听	听
Mine Reclamation and Closing Liability, current and noncurrent	$ 28.6	25.5
Selenium [Domain]	听	听
Site Contingency [Line Items]	听	听
Accrual for Environmental Loss Contingencies, Period Increase (Decrease)	听	$ (29.6)

- Definition

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859

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Increase (decrease) in the accrual for environmental loss contingencies during the reporting period.

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-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
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-Subparagraph (SAB TOPIC 5.Y.Q2)
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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